Which of the following constitutes a difference between a glycolipid and a sphingolipid?
A) only one contains sphingosine
B) only one contains a fatty acid
C) only one contains phosphate
D) only one contains a carbohydrate
E) both c and d
F) All of the choices a through d are differences.
E
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Which of the following describes the relation on an upper-level chart between air temperature and pressure?
A. Changing air temperature is normally associated with low pressure. B. Constant air temperature is normally associated with low pressure. C. Warm air is normally associated with high pressure. D. Cold air is normally associated with high pressure.
ONLY one of the following statements about Europe's population demographics is true. Which one is it?
a. Immigrant workers are not needed to maintain the labor pool. b. Europe is now close to having a negative rate of increase. c. Gender roles have remained static despite political changes, so fewer women pursue careers. d. The baby boom that followed World War II has dramatically increased the percent of children.
Most igneous rocks in the upper part of oceanic crust are composed by what specific product of volcanic eruptions?
a. Lava tubes b. Columnar joints c. Pillow lava d. Lava bomb
Approximately 40 grams of the radioisotope iodine-131 were accidentally released into the atmosphere during the Fukushima nuclear accident. The half-life of iodine-131 is 8 days. How long would it take for there to be 10 grams of iodine-131 left in the
environment? A) 8 days B) 12 days C) 14 days D) 16 days E) 23.7 days